politic / politick are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
politic: (adjective) marked by artful prudence, expedience, and shrewdness. (adjective) smoothly agreeable and courteous with a degree of sophistication.
politick: (verb) engage in political activities.
politic: p·AA·l·ah·t·IH·k
politick: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)